C3-symmetric lanthanide tris(alkoxide) complexes formed by preferential complexation and their stereoselective polymerization of rac-lactide

被引：157

作者：

Arnold, Polly L. ^{[1
]}

Buffet, Jean-Charles ^{[1
]}

Blaudeck, Robert P. ^{[2
]}

Sujecki, Slawomir ^{[2
]}

Blake, Alexander J. ^{[2
]}

Wilson, Claire ^{[3
]}

机构：

[1] Univ Edinburgh, Sch Chem, Edinburgh EH9 3JJ, Midlothian, Scotland

[2] Univ Nottingham, Sch Chem & Elect Engn, Nottingham NG7 2RD, England

[3] Rigaku Europe, Sevenoaks TN15 6QY, Kent, England

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2008年 / 47卷 / 32期

基金：

英国工程与自然科学研究理事会;

关键词：

homogeneous catalysis; lactides; lanthanides; polymerization; structure elucidation;

D O I：

10.1002/anie.200801279

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Restoring order: YIII, EuIII, and ErIII tris-(ligand) complexes of a new chiral alkoxide ligand, tBu2P(O) CH2CH(tBu)OH (HL), preferentially form as C3-symmetric diastereomers. Thus racemic HL affords (RRR)- and (SSS)-[LnL3] complexes, which are active catalysts for the stereoselective polymerization of rac-lactide to afford highly isotactic polylactic acid. (Chemical Equation Presented). © 2008 Wiley-VCH Verlag GmbH & Co. KGaA.

引用

页码：6033 / 6036

页数：4

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